Improvement in motors for operating crosscut-saws



E. POINCOT.

MOTORS FOR OPERATING CROSSCUT-SAWS, &c.

No. 195,644. Patented Sept.25,1877.

llM/EIJTDFL. /& flaw ATT I Y- Wi'HJESSE5.

UNITED STATES ETIENNE POINGOT, OF HOUMA, LOUISIANA, ASSIGNOR OF ONE-HALFHIS PATENT OFFICE.

RIGHT TO EVELIEN LEBOEUF, OF SAME PLACE.

IMPROVEMENT IN MOTORS FOR OPERATING CROSSCUT-SAWS, &c.

Specification forming part of Letters Patent No. 195,644, datedSeptember 25,1877; application filed August 14, 1877.

To all whom it may concern:

Be it known that I, ETIENNE PoINooT, a resident of the town of Houma,parish of Terre Bonne, and State of Louisiana, have invented a certainnew and useful Improvement in Motive Power; and I do hereby declare thefollowing to be a full, clear, and correct description of the same,reference being had to the annexed drawing, making a part of thisspecification.

This invention relates to a mechanical arrangement through the agency ofwhich various kinds of machinery may be operated with an expenditure ofbut very little power.

The accompanying drawing represents, at

Figure l, a side elevation, and at Fig. 2 a plan or top view, of myinvention with crosscut-saw attachment.

A is a bed-plate, which is either secured to a solid foundation ormounted on wheels, according to the nature of the work for which themachine is to be applied. On each side of this plate, and near the rearend thereof, are erected the stands B B, in the cross-bars c of which isjournaled the main shaft D, the latter provided with right-angled crankse e, which are connected with the operating-levers F F by means ofconnecting-rods, as shown at l out the center of the bed-plate is boltedor otherwise secureda guide-frame, H,.in which is operated areciprocating bar, I, furnished on both upper andwlower sides withfrictionrollers 'i i, in order to present as little resistance aspossible. The rear end of this bar is provided with a side stud, onwhich is fitted afriction-roller, (shown in dotted lines at 70,) foroperating in an eccentric groove, 1, that is cast or cut in one side ofthe fly'wheel M, so that the rotating of the said wheel may, by reasonof the above connection, impart a reciprocating movement to the bar I,from the forward end of which the motion is transmitted to the machinewhich it is desired to opcrate.

Anovel attachment for operating one or more crosscut-saws is shown onthe drawing in connection with the apparatus, the same consisting of alever, N, the center -of which is pivoted to the forward end of the rodI, as shown at O. The ends of this lever N are somewhat reduced inthickness, so as to operate in the guides P P, the former secured to thebed-plate, and the latter projecting forward from the upper portion ofthe guidet'rame H, as shown. I

The lever N is made hollow, with a double zigzag rack on each side ofits inner surface and an open slot in its face, so as to permit thesaw-holder to work from the upper to the lower end thereof. The descentof the saw is automatically regulated by its weight and by reason of apin, 1, which protrudes on each side of the saw-holder, so as to fit inand follow the zigzag grooves t that are formed by the racks facing oneanother.

Both ends of the lever N, as well as its upper and lower guides, areperforated, as shown, so that either end of the said lever may bepinned, and from which point a vibrating motion is obtained when themachine is in operation, thus giving to the saw a long sweeping strokeas it first enters a log, and

changing the same to a short and more direct one as it nears the centeror greatest diameter of the same.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

l. The improved motive power herein described, the same consisting of astand, H, reciprocating bar I, and friction-roller k, in combinationwith a fiy-wheel, M, provided with eccentric groove l, all arranged tooperate by means of levers F F, as described, and for the purpose setforth.

2. In combination with the frame A, the guides P P and lever N, thelatter provided on its inner side with zigzag grooves t, and arranged tooperate as described, and for the purpose specified.

In testimony whereof I have hereunto set my hand.

ETIENNE POINOOT.

In presence of- T. H. BOUBGEOIS, E. LEBOEUF.

